Send "Permission Denied" emails only to admin (or disable)

Hello,

Is it possible to stop RT from sending “Permission Denied” emails out
when someone tries replying to or creating a ticket in a queue where
they don’t have permission?

Ideally I’d like these to just go to the site administrator, though
disabling them entirely would work too.

(Running RT 3.6.6 and will be upgrading to 3.8.1 once out.)

Cheers,
Paul

d’oh! Turns out the email was a “Could not load a valid user” message,
and to solve my own problem found the function _NoAuthorizedUserFound to
edit in lib/RT/Interface/Email.pm

Cheers,
Paul